Front end module
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsMyeong Woo Han, Youn Suk Kim, Shinichi Iizuka, Ju Young Park, Ki Joong Kim, Young Jean Song, Jun Goo Won
Life of this patent
Estimating the term…
Abstract
There is provided a front end module, including an amplification circuit unit amplifying signal, a multistage matching circuit unit connected to an output terminal of the amplification circuit unit, and a switch circuit unit connected to the multistage matching circuit unit, wherein the switch circuit unit includes a series switch circuit and a parallel switch circuit, the parallel switch circuit being connected to a node between a plurality of matching circuits included in the multistage matching circuit unit.
Claims9
A front end module, comprising:
- an amplification circuit unit amplifying a signal;
- a multistage matching circuit unit connected to an output terminal of the amplification circuit unit;
- and
- a switch circuit unit connected to the multistage matching circuit unit,
- wherein the switch circuit unit includes a series switch circuit and a parallel switch circuit, and the parallel switch circuit being connected to a node between a plurality of matching circuits included in the multistage matching circuit unit in which a radio frequency (RF) signal has a lower voltage level than a voltage level in an end terminal of the plurality of matching circuits, and
- wherein, when the series switch circuit is turned on, the switch circuit unit turns off the parallel switch circuit to transmit the signal amplified by the amplification circuit unit to the output terminal.
A front end module, comprising:
- an amplification device having an input terminal and an output terminal;
- a plurality of matching circuits connected to an output terminal of the amplification device;
- a plurality of first switch devices connected in parallel to a node between the plurality of matching circuits in which an RF signal has a lower voltage level than a voltage level in an end terminal of the plurality of matching circuits;
- and
- a plurality of second switch devices connected in series between the end terminal of the plurality of matching circuits and an antenna,
- wherein, when the plurality of second switch devices are turned on, the plurality of first switch devices are turned off, and
- the number of the plurality of the first switch devices is lower than the number of the plurality of the second switch devices.
Dependencies are inferred from the claim text.